Finding the Fourth Proportional to 12,021,930.76, 16,591,965.78 and 7,439,728.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,021,930.76 : 16,591,965.78 = 7,439,728.36 : x
2. Step 2: Convert to fraction form
   12,021,930.76/16,591,965.78 = 7,439,728.36/x
3. Step 3: Cross multiply
   12,021,930.76x = 16,591,965.78 × 7,439,728.36
4. Step 4: Simplify right side
   12,021,930.76x = 123,439,718,361,615.52
5. Step 5: Solve for x
   x = 123,439,718,361,615.52/12,021,930.76
6. Step 6: Final answer
   x = 10,267,878.00